I will second SlitheyTove’s suggestion to post on the Jewish B student thread. There are a large number of parents who have information on several colleges. Even if many of us are not frum, we may be aware of what is available on campuses for Jewish students.
I think it is easier to find several “best fit” colleges when there are the least conditions that can narrow the available choices. We all narrow down choices according to cost, grades, major, location, college size and so on. In some cases, where the conditions make the number of choices small, it then comes down to prioritizing the conditions and aiming for best fit under the circumstances. So, for instance, someone with low grades and great financial need will have more limited choices than someone with the same grades and little financial need.
In your situation, I see two important conditions to consider: orthodox Judaism and finances. To consider all your possible choices, I think it may serve you well to look out of the box- for instance a college that may not have an on site orthodox community, but one nearby, or one in walking distance. Such a community may be quite happy to house you for Shabbat and there could be Kosher food available nearby. Although colleges tend to hold students to meal plans, I have known of exceptions in the case of severe food allergies, where students can live in a situation with a kitchen. There could be the possibility of making an exception for you as well.
Although you are not Chabad, in some smaller Jewish communities the Chabad on campus is more inclusive and diverse than a community large enough for denominations to have their own groups. A college such as Brandeis offers students a choice to participate in whatever denomination they wish. In very small communities, the Chabad incorporates the entire range of denominations. Any food consumed is done at their homes, and surely they would know where Kosher food is available as they require it themselves. Contacting them about any colleges may be informative to you.
One alternative is if there are any colleges near you that you might commute to, for at least some of the years of college. Of course, don’t only consider this- apply to the colleges you are interested in, but if this is a possible option, then include those colleges.
Your school may appreciate bragging rights, but they don’t pay the bills. Of course, apply to these colleges if there is a chance of acceptance and affordability, but do not discount an affordable college on the basis of prestige alone. Some not so well known colleges may be good opportunities for you.
If finances were not a concern, I think some choices would be wide open, however, you, like many other students have this consideration and might benefit from some creative ideas. Posting this on the Jewish B student thread might result in some suggestions.